.container {
    max-width: 800px;
    margin: 20px auto;
    padding: 20px;
}

.alert {
    padding: 10px;
    margin-bottom: 20px;
    border-radius: 4px;
}

.alert.error {
    background-color: #ffe6e6;
    color: #cc0000;
}

form {
    margin: 20px 0;
}

fieldset {
    display: flex;
    border: 1px solid #ddd;
    padding: 10px;
    margin-bottom: 15px;
    border-radius: 4px;
}

fieldset label {
    display: inline-block;
    margin-right: 10px;
}

input[type="radio"] {
    display: inline-block;
    margin-right: 10px;
}

input[type="file"] {
    display: block;
    margin: 10px 0;
}

pre {
    background: #f5f5f5;
    padding: 10px;
    border-radius: 4px;
}

.form-group {
    margin-bottom: 15px;
}

label {
    display: block;
    margin-bottom: 5px;
    font-weight: bold;
}

select, input {
    width: 100%;
    padding: 8px;
    border: 1px solid #ddd;
    border-radius: 4px;
}

button {
    background: #007bff;
    color: white;
    padding: 10px 20px;
    border: none;
    border-radius: 4px;
    cursor: pointer;
}

button:hover {
    background: #0056b3;
}